<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper"
          v-for="item of hot"
          :key="item.id"
          @click="handleCityClick(item.name)"
          >
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">字母排序</div>
        <div class="button-list">
          <div class="word-wrapper"
          v-for="(item, key) of cities"
          :key="key"
          @click="handleWordClick">
            <div class="button">{{key}}</div>
          </div>
        </div>
      </div>
      <div class="area"
      v-for="(item, key) of cities"
      :key="key"
      :ref="key"
      >
        <div class="title border-topbottom">{{key}}</div>
        <div class="button-list">
          <div class="place-wrapper"
              v-for = "innerItem of item"
              :key = "innerItem.id"
              @click="handleCityClick(innerItem.name)"
              >
            <div class="button">{{innerItem.name}}</div>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  },
  methods: {
    handleWordClick (e) {
      this.$emit('change', e.target.innerText)
    },
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}
</script>
<style lang="stylus" scoped>
  @import '~styles/mixins.styl'
  .border-topbottom
    &:before
      border-color: #ccc
    &:after
      border-color: #ccc
  .border-bottom
    &:before
      border-color: #ccc
  .list
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    .title
      line-height: .54rem
      background: #eee
      padding-left: .2rem
      color: #666
      font-size: .26rem
    .button-list
      overflow: hidden
      box-sizing: border-box
      .button-wrapper
        float: left
        width: 33%
        border-bottom: .01rem solid #ccc
        border-right: .01rem solid #ccc
        .button
          button()
          ellipsis()
    .button-list
      overflow: hidden
      .word-wrapper
        float: left
        width: 16%
        margin-top: .1rem
        .button
          button()
    .button-list
      overflow: hidden
      .place-wrapper
        float: left
        width: 23%
        margin-top: .1rem
        margin-right: .1rem
        border-bottom: .01rem solid #ccc
        border-right: .01rem solid #ccc
        .button
          button()
          ellipsis()
</style>
